nextflow-hello-workflow

nextflow-hello-workflow is a skill for Claude Code, Codex from ma-compbio-lab/SkillFoundry. It costs 46 tokens per session (845 once invoked), scanned A, original, Apache-2.0.

A minimal Nextflow workflow that produces greeting files and can run locally or through a Slurm cluster. Nextflow is a tool for connecting and running data-processing steps; Slurm schedules jobs on a cluster.

In plain words
What is it for?
Use it to verify local execution, test Slurm submission, and inspect produced files and run details.
Why use it?
It provides a known-good smoke test for the repository's Nextflow setup before adapting a larger pipeline.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to verify local execution, test Slurm submission, and inspect produced files and run details.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ma-compbio-lab/SkillFoundry --skill nextflow-hello-workflow
Clone the repo
git clone --depth 1 https://github.com/ma-compbio-lab/SkillFoundry

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for nextflow-hello-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow/github.svg)](https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow)
Your own site
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for nextflow-hello-workflow

Your own site · 80×15
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/nextflow-hello-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 845 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.00845
Opus 5 $0.00023 $0.00423
Sonnet 5 $0.00009 $0.00169
Haiku 4.5 $0.00005 $0.00085

Measured 5d ago against content hash 0676a09dd283, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nextflow-hello-workflow scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/run_nextflow_hello.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/reproducible-workflows/nextflow-hello-workflow/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

Verify that the repository-local Nextflow runtime works and execute a tiny deterministic workflow end to end, including a Slurm executor path.

When to use

  • You need a small, local Nextflow smoke test.
  • You want a known-good example before adapting a larger workflow.
  • You want to confirm that Nextflow can submit tiny jobs to the local Slurm cluster.

When not to use

  • You need container orchestration or production pipeline packaging.

Inputs

  • examples/main.nf
  • Optional --out-dir, --work-dir, and executor settings
  • For cluster runs: --executor slurm plus an optional partition

Outputs

  • Published greeting files in the chosen output directory
  • JSON summary with the runtime version, produced files, and optional Slurm trace/accounting details

Requirements

  • The repo-local toolchain at slurm/envs/nextflow-tools
  • Local filesystem write access for the work and output directories
  • For cluster verification: sbatch and sacct access on the local Slurm cluster

Procedure

  1. Run python3 skills/reproducible-workflows/nextflow-hello-workflow/scripts/run_nextflow_hello.py --out-dir scratch/nextflow-hello/results for a local smoke path.
  2. Run python3 skills/reproducible-workflows/nextflow-hello-workflow/scripts/run_nextflow_hello.py --executor slurm --partition cpu --out-dir scratch/nextflow-hello-slurm/results --work-dir scratch/nextflow-hello-slurm/work --summary-out scratch/nextflow-hello-slurm/summary.json for a cluster-backed smoke path.
  3. Inspect the returned files list and the output directory contents.
  4. For Slurm runs, inspect trace_rows and slurm_jobs in the summary.
  5. Reuse the pattern in examples/main.nf when bootstrapping larger pipelines.

Validation

  • nextflow info succeeds through the repo-local wrapper environment.
  • nextflow run completes without errors.
  • Four greeting files are published to the output directory.
  • For Slurm runs, the trace file contains native job IDs and sacct reports COMPLETED with ExitCode 0:0.

Read the full file on GitHub · 68 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 68 lines · 46 tokens per session scan A 0676a09dd283

Subscribe to this mod's changes

nextflow-hello-workflow is a skill published in the GitHub repository ma-compbio-lab/SkillFoundry (38 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 46 tokens to every session and 845 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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